void RestoreBaseType()
{
var moduleType = DotNetUtils.GetModuleType(module);
foreach (var type in module.GetTypes())
{
if (!IsTypeWithInvalidBaseType(moduleType, type))
{
continue;
}
var corSig = module.CorLibTypes.GetCorLibTypeSig(type);
if (corSig != null && corSig.ElementType == ElementType.Object)
{
continue;
}
Logger.v("Adding System.Object as base type: {0} ({1:X8})",
Utils.RemoveNewlines(type),
type.MDToken.ToInt32());
type.BaseType = module.CorLibTypes.Object.TypeDefOrRef;
}
}
public void FindMethods()
{
var moduleType = DotNetUtils.GetModuleType(Module);
if (moduleType == null)
{
return;
}
var delegateMethods = new List <MethodDef>();
foreach (var method in moduleType.Methods)
{
if (!IsDelegateMethod(method))
{
continue;
}
delegateMethods.Add(method);
//Console.WriteLine("Found Delegate Method {0}", method.Name);
}
Methods = delegateMethods;
}
void DeleteTypes()
{
var types = module.Types;
if (types == null || typesToRemove.Count == 0)
{
return;
}
Logger.v("Removing types");
Logger.Instance.Indent();
var moduleType = DotNetUtils.GetModuleType(module);
foreach (var info in typesToRemove)
{
var typeDef = info.obj;
if (typeDef == null || typeDef == moduleType)
{
continue;
}
bool removed;
if (typeDef.DeclaringType != null)
{
removed = typeDef.DeclaringType.NestedTypes.Remove(typeDef);
}
else
{
removed = types.Remove(typeDef);
}
if (removed)
{
Logger.v("Removed type {0} ({1:X8}) (reason: {2})",
Utils.RemoveNewlines(typeDef),
typeDef.MDToken.ToUInt32(),
info.reason);
}
}
Logger.Instance.DeIndent();
}
public void FindFields()
{
if (Methods == null || Methods.Count == 0)
{
return;
}
var initializations = new List <DelegateInitInfo>();
var mnoduleType = DotNetUtils.GetModuleType(Module);
if (mnoduleType != null)
{
foreach (var method in mnoduleType.Methods)
{
var inits = FindFieldInitializations(method);
if (inits == null || inits.Count == 0)
{
continue;
}
initializations.AddRange(inits);
}
}
foreach (var type in Module.GetTypes())
{
if (!DotNetUtils.DerivesFromDelegate(type))
{
continue;
}
var inits = FindFieldInitializations(type.FindStaticConstructor());
if (inits == null || inits.Count == 0)
{
continue;
}
initializations.AddRange(inits);
}
Initializations = initializations;
}
public void Find()
{
var type = DotNetUtils.GetModuleType(module);
if (type == null)
{
return;
}
foreach (var method in type.Methods)
{
if (!method.IsStatic || method.Body == null)
{
continue;
}
if (!DotNetUtils.IsMethod(method, "System.Object", "(System.UInt32)"))
{
continue;
}
var info = new DecrypterInfo();
var localTypes = new LocalTypes(method);
if (localTypes.All(requiredLocals1))
{
if (localTypes.Exists("System.Collections.BitArray")) // or System.Random
{
version = ConfuserVersion.v15_r60785_normal;
}
else if (DeobUtils.HasInteger(method, 0x100) &&
DeobUtils.HasInteger(method, 0x10000) &&
DeobUtils.HasInteger(method, 0xFFFF))
{
version = ConfuserVersion.v17_r73404_normal;
}
else if (DotNetUtils.CallsMethod(method, "System.String System.Text.Encoding::GetString(System.Byte[])"))
{
if (FindInstruction(method.Body.Instructions, 0, Code.Conv_I8) >= 0)
{
if (DotNetUtils.CallsMethod(method, "System.Void System.Console::WriteLine()"))
{
version = ConfuserVersion.v15_r60785_dynamic;
}
else
{
version = ConfuserVersion.v17_r72989_dynamic;
}
}
else
{
version = ConfuserVersion.v17_r73740_dynamic;
}
}
else if (DotNetUtils.CallsMethod(method, "System.String System.Text.Encoding::GetString(System.Byte[],System.Int32,System.Int32)"))
{
if ((nativeMethod = FindNativeMethod(method)) == null)
{
version = ConfuserVersion.v17_r73764_dynamic;
}
else
{
version = ConfuserVersion.v17_r73764_native;
}
}
else
{
continue;
}
}
else if (localTypes.All(requiredLocals2))
{
if (DeobUtils.HasInteger(method, 0x100) &&
DeobUtils.HasInteger(method, 0x10000) &&
DeobUtils.HasInteger(method, 0xFFFF))
{
version = ConfuserVersion.v17_r73822_normal;
}
else if (DotNetUtils.CallsMethod(method, "System.Int32 System.Object::GetHashCode()"))
{
if ((nativeMethod = FindNativeMethod(method)) == null)
{
version = ConfuserVersion.v17_r74021_dynamic;
}
else
{
version = ConfuserVersion.v17_r74021_native;
}
}
else if ((nativeMethod = FindNativeMethod(method)) == null)
{
version = ConfuserVersion.v17_r73822_dynamic;
}
else
{
version = ConfuserVersion.v17_r73822_native;
}
}
else
{
continue;
}
info.decryptMethod = method;
theDecrypterInfo = info;
Add(info);
break;
}
}
public void Find(ISimpleDeobfuscator simpleDeobfuscator)
{
var type = DotNetUtils.GetModuleType(module);
if (type == null)
{
return;
}
foreach (var method in type.Methods)
{
if (!method.IsStatic || method.Body == null)
{
continue;
}
if (!DotNetUtils.IsMethod(method, "System.String", "(System.Int32)"))
{
continue;
}
var localTypes = new LocalTypes(method);
if (!localTypes.All(requiredLocals))
{
continue;
}
simpleDeobfuscator.Deobfuscate(method);
bool foundOldMagic1;
if (FindMagic1(method, out magic1))
{
foundOldMagic1 = true;
}
else if (FindNewMagic1(method, out magic1))
{
foundOldMagic1 = false;
}
else
{
continue;
}
if (!FindMagic2(method, out magic2))
{
continue;
}
version = ConfuserVersion.Unknown;
if (DotNetUtils.CallsMethod(method, "System.Text.Encoding System.Text.Encoding::get_UTF8()"))
{
if (foundOldMagic1)
{
if (DotNetUtils.CallsMethod(method, "System.Object System.AppDomain::GetData(System.String)"))
{
version = ConfuserVersion.v13_r55604_safe;
}
else
{
version = ConfuserVersion.v10_r42915;
}
}
else
{
if (!FindSafeKey1(method, out key1))
{
continue;
}
version = ConfuserVersion.v14_r58802_safe;
}
}
else if (!localTypes.Exists("System.Random"))
{
if (foundOldMagic1)
{
version = ConfuserVersion.v11_r49299;
}
else
{
version = ConfuserVersion.v14_r58802_dynamic;
}
}
else if (localTypes.Exists("System.Collections.Generic.Dictionary`2<System.Int32,System.String>"))
{
version = ConfuserVersion.v10_r48832;
}
if (version == ConfuserVersion.Unknown)
{
continue;
}
decryptMethod = method;
break;
}
}
public void FindDelegateCreator(ISimpleDeobfuscator simpleDeobfuscator) {
var type = DotNetUtils.GetModuleType(module);
if (type == null)
return;
foreach (var method in type.Methods) {
if (method.Body == null || !method.IsStatic || !method.IsAssembly)
continue;
var theVersion = ConfuserVersion.Unknown;
if (DotNetUtils.IsMethod(method, "System.Void", "(System.String,System.RuntimeFieldHandle)"))
theVersion = ConfuserVersion.v10_r42915;
else if (DotNetUtils.IsMethod(method, "System.Void", "(System.RuntimeFieldHandle)"))
theVersion = ConfuserVersion.v10_r48717;
else
continue;
var proxyType = GetProxyCreatorType(method, simpleDeobfuscator, out int tmpVer);
if (proxyType == ProxyCreatorType.None)
continue;
if (proxyType == ProxyCreatorType.Newobj)
foundNewobjProxy = true;
simpleDeobfuscator.Deobfuscate(method, SimpleDeobfuscatorFlags.DisableConstantsFolderExtraInstrs);
MethodDef nativeMethod = null;
if (FindMagic_v14_r58564(method, out uint magic)) {
if (!DotNetUtils.CallsMethod(method, "System.Byte[] System.Convert::FromBase64String(System.String)")) {
if (!IsMethodCreator_v14_r58802(method, proxyType))
theVersion = ConfuserVersion.v14_r58564;
else
theVersion = ConfuserVersion.v14_r58802;
}
else if (DotNetUtils.CallsMethod(method, "System.Reflection.Module System.Reflection.MemberInfo::get_Module()"))
theVersion = ConfuserVersion.v17_r73479;
else if (proxyType != ProxyCreatorType.CallOrCallvirt || !HasFieldReference(method, "System.Reflection.Emit.OpCode System.Reflection.Emit.OpCodes::Castclass"))
theVersion = ConfuserVersion.v14_r58857;
else if (proxyType == ProxyCreatorType.CallOrCallvirt && DotNetUtils.CallsMethod(method, "System.Void System.Reflection.Emit.DynamicMethod::.ctor(System.String,System.Type,System.Type[],System.Boolean)"))
theVersion = ConfuserVersion.v16_r66631;
else if (proxyType == ProxyCreatorType.CallOrCallvirt)
theVersion = ConfuserVersion.v16_r70489;
}
else if (!DotNetUtils.CallsMethod(method, "System.Byte[] System.Convert::FromBase64String(System.String)") &&
DotNetUtils.CallsMethod(method, "System.Reflection.MethodBase System.Reflection.Module::ResolveMethod(System.Int32)")) {
if (proxyType == ProxyCreatorType.CallOrCallvirt && !FindCallvirtChar(method, out callvirtChar))
continue;
if ((nativeMethod = FindNativeMethod_v18_r75367(method)) != null)
theVersion = proxyType != ProxyCreatorType.CallOrCallvirt || callvirtChar == 9 ? ConfuserVersion.v18_r75367_native : ConfuserVersion.v18_r75369_native;
else if (FindMagic_v18_r75367(method, out magic))
theVersion = proxyType != ProxyCreatorType.CallOrCallvirt || callvirtChar == 9 ? ConfuserVersion.v18_r75367_normal : ConfuserVersion.v18_r75369_normal;
else if (FindMagic_v19_r76101(method, out magic))
CommonCheckVersion19(method, true, tmpVer, ref theVersion);
else if ((nativeMethod = FindNativeMethod_v19_r76101(method)) != null)
CommonCheckVersion19(method, false, tmpVer, ref theVersion);
else {
if (proxyType == ProxyCreatorType.CallOrCallvirt && !DotNetUtils.CallsMethod(method, "System.Int32 System.String::get_Length()"))
theVersion = ConfuserVersion.v11_r50378;
int numCalls = ConfuserUtils.CountCalls(method, "System.Byte[] System.Text.Encoding::GetBytes(System.Char[],System.Int32,System.Int32)");
if (numCalls == 2)
theVersion = ConfuserVersion.v12_r54564;
if (!DotNetUtils.CallsMethod(method, "System.Reflection.Assembly System.Reflection.Assembly::Load(System.Reflection.AssemblyName)"))
theVersion = ConfuserVersion.v13_r55346;
if (DotNetUtils.CallsMethod(method, "System.Void System.Runtime.CompilerServices.RuntimeHelpers::RunClassConstructor(System.RuntimeTypeHandle)"))
theVersion = ConfuserVersion.v13_r55604;
}
}
else if (Is_v17_r73740(method)) {
if (DotNetUtils.CallsMethod(method, "System.Boolean System.Type::get_IsArray()")) {
if ((nativeMethod = FindNativeMethod_v17_r73740(method)) != null)
theVersion = ConfuserVersion.v17_r74708_native;
else if (FindMagic_v17_r73740(method, out magic))
theVersion = ConfuserVersion.v17_r74708_normal;
else
continue;
}
else {
if ((nativeMethod = FindNativeMethod_v17_r73740(method)) != null)
theVersion = ConfuserVersion.v17_r73740_native;
else if (FindMagic_v17_r73740(method, out magic))
theVersion = ConfuserVersion.v17_r73740_normal;
else
continue;
}
}
else if (theVersion == ConfuserVersion.v10_r42915) {
if (DeobUtils.HasInteger(method, 0x06000000))
theVersion = ConfuserVersion.v10_r42919;
}
SetDelegateCreatorMethod(method);
methodToInfo.Add(method, new ProxyCreatorInfo(method, proxyType, theVersion, magic, nativeMethod, callvirtChar));
version = (ConfuserVersion)Math.Max((int)version, (int)theVersion);
}
}
bool CheckMethod_safe(TypeDef type, MethodDef initMethod)
{
if (type == DotNetUtils.GetModuleType(module))
{
if (!DotNetUtils.HasString(initMethod, "Debugger detected (Managed)"))
{
return(false);
}
if (!CheckProfilerStrings1(initMethod))
{
return(false);
}
version = ConfuserVersion.v14_r57588_safe;
}
else
{
var ntQueryInformationProcess = DotNetUtils.GetPInvokeMethod(type, "ntdll", "NtQueryInformationProcess");
if (ntQueryInformationProcess == null)
{
return(false);
}
if (DotNetUtils.GetPInvokeMethod(type, "ntdll", "NtSetInformationProcess") == null)
{
return(false);
}
if (DotNetUtils.GetPInvokeMethod(type, "kernel32", "CloseHandle") == null)
{
return(false);
}
var antiDebugMethod = GetAntiDebugMethod(type, initMethod);
if (antiDebugMethod == null)
{
return(false);
}
bool hasDebuggerStrings = DotNetUtils.HasString(antiDebugMethod, "Debugger detected (Managed)") ||
DotNetUtils.HasString(antiDebugMethod, "Debugger is detected (Managed)");
if (!DotNetUtils.CallsMethod(initMethod, "System.Void System.Threading.Thread::.ctor(System.Threading.ParameterizedThreadStart)"))
{
return(false);
}
if (ConfuserUtils.CountCalls(antiDebugMethod, ntQueryInformationProcess) != 0)
{
return(false);
}
if (!CheckProfilerStrings1(initMethod) && !CheckProfilerStrings2(initMethod))
{
return(false);
}
int failFastCalls = ConfuserUtils.CountCalls(antiDebugMethod, "System.Void System.Environment::FailFast(System.String)");
if (failFastCalls != 2)
{
return(false);
}
if (hasDebuggerStrings)
{
if (!DotNetUtils.CallsMethod(antiDebugMethod, "System.Void System.Threading.Thread::.ctor(System.Threading.ParameterizedThreadStart)"))
{
version = ConfuserVersion.v16_r61954_safe;
}
else if (DotNetUtils.GetPInvokeMethod(type, "IsDebuggerPresent") == null)
{
version = ConfuserVersion.v17_r73822_safe;
}
else if (CheckProfilerStrings1(initMethod))
{
version = ConfuserVersion.v17_r74021_safe;
}
else
{
version = ConfuserVersion.v19_r76119_safe;
}
}
else
{
version = ConfuserVersion.v19_r78363_safe;
}
}
return(true);
}
